The Transformation Wave

I know, I know, that is a really science-y title, but I'll leave it that way anyways. Happy reading!

There was once a top-secret lab that did experiments that was called Mind Control Intelligence, otherwise known as MCI.
BUT one experiment changed the face of MCI-Transformation waves. In other words, transforming and switching into another person. And who was the genius behind the project? None other than-(Did you guess?)-Madelline!
Madelline was an adult now, about 30 or 40 years of age. Her partners were Hannah and Kyle (From "Stranger than Historical Fiction"). By now, Hannah's birthday was coming up.
Madelline went over to a button in her laboratory. "This button can switch you two around."
"Wait," said Hannah. "I thought that when you were talking about Transformation waves, that it was only a theory. That button can change MCI in a bad way. A VERY bad way."
"She's right. We've underestimated things from a magician. But who knows what could happen if you pushed that button?" said Kyle.
"Great. No support. I guess I will push the button anyways," said Madelline.
BOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOM!
An explosion occurred.
This wasn't the kind of explosion that blasted you backwards. This explosion erupted in the sky, with a flash of blinding light.
"What the-?" cried Kyle, holding his hair. "I'm a GIRL!"
"What the-?" cried Hannnah, holding her hair. "I'm a BOY!"
The two exclaimed glances and screamed.

"We have got to reverse the effect that caused us to switch places. Now everyone thinks I'm really Hannah! Try wishing on your birthday that we were our own selves again," said Kyle; otherwise known as "Hannah."
"Okay, I'll try," said Hannah; otherwise known as "Kyle."
"In ten seconds, your birthday will start, and you will have to blow the candle. If everything goes as planned, then it's all going to be okay. If it doesn't, then, I guess I'll stay a GIRL."
"And I'll stay a BOY," said Hannah; otherwise known as "Kyle."
When she blew the candle, an explosion occurred, and then Kyle and Hannah opened their eyes. THEIR eyes.

I hope you liked the story. Good day, to all of you!